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L7759 Sigma

Lectin from Arachis hypogaea (peanut)

peroxidase conjugate, lyophilized powder

Synonym: PNA, Peanut agglutinin



Related Categories Arachis hypogaea (Peanut), Biochemicals and Reagents, Glycan Recognizing Proteins, Glycobiology, Lectins,
form   lyophilized powder
peroxidase activity   ≥20 units/mg protein
composition   Protein, ≥80% Warburg-Christian
conjugate   peroxidase conjugate
storage temp.   −20°C



General Western Blot Protocol:
• Glycoprotein sample size: 500ng
• Lectin Concentration: 0.1ug/ml

  1. Load samples at 500 ng of glycoprotein per lane
    • Run 4-20% Bis-Tris SDS page gel
    • Transfer gel to a PVDF membrane
    • Block membrane for 1 hr at RT with RIPA buffer (R0278 Sigma)
    • Incubate HRP lectin at 0.1ug/ml with RIPA buffer for 2 hours at RT
    • Wash membrane 5 x 5 minutes with 25ml RIPA buffer
    • Detect using chemiluminescent substrate (CPS1-120)

Biochem/physiol Actions

PNA does not agglutinate normal human erythrocytes, but strongly agglutinates neuraminidase treated erythrocytes. PNA has potent anti-T activity similar to the anti-T antibody in human sera. The lectin can be used to distinguish between human lymphocyte subsets.


250 μg in serum bottle

Preparation Note

Prepared from peroxidase (P8375) using a modification of a published method, which favors low molecular weight conjugates. Repurified after conjugation by affinity chromatography.

Unit Definition

One unit will form 1 mg purpurogallin in 20 sec from pyrogallol at pH 6.0 at 20 °C.

Physical form

Contains sodium citrate

Price and Availability

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Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Frequently Asked Questions

How does the storage temperature relate to shipping conditions?
The storage conditions that a Sigma-Aldrich catalog and label recommend for products are deliberately conservative. For many products, long-term storage at low temperatures will increase the time during which they are expected to remain in specification and therefore are labeled accordingly. Where short-term storage, shipping time frame, or exposure to conditions other than those recommended for long-term storage will not affect product quality, Sigma-Aldrich will ship at ambient temperature. The products sensitive to short-term exposure to conditions other than their recommended long-term storage are shipped on wet or dry ice. Ambient temperature shipping helps to control shipping costs for our customers. At any time, our customers can request wet- or dry-ice shipment, but the special handling is at customer expense if our product history indicates that the product is stable for regular shipment. http://www.sigmaaldrich.com/etc/medialib/docs/Sigma-Aldrich/General_Information/shippingandlong-termstoragev3.Par.0001.File.tmp/shippingandlong-termstoragev3.pdf
Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option: http://www.sigmaaldrich.com/catalog/AdvancedSearchPage.do
How do I find price and availability?
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What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS. To access the shipping information for this material, use the link on the product detail page for the product, or search here. 
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
Is the peanut lectin (Lectin from Arachis hypogaea) a glycoprotein?  If so, what is the carbohydrate content?
Peanut lectin is not a glycoprotein. Although peanut lectin binds specifically to a particular carbohydrate (beta-gal(1-->3)galNac) in other molecules, the lectin itself does not contain any carbohydrate.  Please see page 231 of the following paper: R. Banerjee, et al., "Crystal structure of peanut lectin, a protein with an unusual quaternary structure."  Proc. Nat. Acad. Sci., USA, 91, 227-231 (1994).
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